儿童画册有6本，科技书39.2元，一共是87.8元。那本儿童画册多少元?(写出经过)

Question

如题所述

Answer 1

(87.8-39.2)÷6
=48.6÷6
=8.1
答：儿童画册每本8.1元。

Answer 2

(87.8-39.2)/6=8.1